Severe dehydration

Severe dehydration means:

  • Your mouth and eyes are extremely dry.
  • You pass little or no urine for 12 or more hours.
  • You do not feel alert, or you cannot think clearly.
  • You are too weak or dizzy to stand.
  • You may pass out.

Severe dehydration is a medical emergency and requires emergency treatment. Call 911 or other emergency services immediately.

By the time a person becomes severely dehydrated, there is no longer enough fluid in the body to carry enough blood to vital organs. Shock, which is a life-threatening condition, can develop quickly.

Last Updated: June 30, 2009

Author: Jan Nissl, RN, BS

Medical Review: Martin Gabica, MD - Family Medicine & William M. Green, MD - Emergency Medicine & H. Michael O'Connor, MD - Emergency Medicine & William H. Blahd, Jr., MD, FACEP - Emergency Medicine

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